/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/ViewModels/Stack/NiagaraStackViewModel.h
typedef TMulticastDelegate_TwoParams< void, [TArray](API\Runtime\Core\Containers\TArray)< [UObject](API\Runtime\CoreUObject\UObject\UObject) * >, [ENiagaraDataObjectChange](API\Plugins\NiagaraEditor\ENiagaraDataObjectChange) > FOnDataObjectChanged